Home / 678,755.60-1,018,354.83-323,723.48

Finding the Fourth Proportional to 678,755.60, 1,018,354.83 and 323,723.48

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Solution

The fourth proportional to 678,755.60, 1,018,354.83 and 323,723.48 is: 485,690.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,755.60 : 1,018,354.83 = 323,723.48 : x
  2. Step 2: Convert to fraction form
    678,755.60/1,018,354.83 = 323,723.48/x
  3. Step 3: Cross multiply
    678,755.60x = 1,018,354.83 × 323,723.48
  4. Step 4: Simplify right side
    678,755.60x = 329,665,369,442.41
  5. Step 5: Solve for x
    x = 329,665,369,442.41/678,755.60
  6. Step 6: Final answer
    x = 485,690.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.